To chart the evolution of men's swimwear, we need to go back in time to the first big shock in Speedos history.

Let's go back to 1960 when the traditional Speedo was redesigned in a collection so scandalous, the first man to wear them would be arrested.

SPEEDO / KATE GERAGHTY / FAIRFAX MEDIA
The Speedo Golden Sands Series catalog for the summer of 1960-61, described as 'dramatic'.

In the years after WWII, Speedo had begun exporting to the U.S. and Europe, was well known for creating Olympic swimming outfits, they had been suiting the nation's Surf Life Saving clubs for decades and had by and by stayed true to the original Speedo shape.

Andrew Stephenson / Fairfax Media
This is 1960s Speedo designer Gloria Smyth with the cutting-edge, 8-inch sided trunks that the USA swim used at the 1964 Tokyo Olympic Games.

Then the Golden Sands Collection hit the scene in 1960 with a smaller, more streamline shape. Designer Peter Travis from Manly, Sydney created the series after being told to copy a Hawaiian trunk design.

"My reply was: 'The whole world will have that. I will start with a costume you will swim in'," he told The Sydney Morning Herald as an 80-year-old in 2008.